Reversible turbine.



H. A. MQGULLOCH REVERSIBLE TURBINE.

APPLICATION FILED my 10. 1912.

1,061,858. Patented ma 13, 1913.

4 BKBETB-BEHBT 1.

H. A. MQGU'LLOEE- REVERSIBLE TURBINE.

APPLICATION Fl [LED MAY 10, 1912.

' Patented May 13,1913;

' 4 SHEETS-SHEET 2.

A. MQCULLOCH.

REVERSIBLE TURBINE.

A PLiOAI'I'JN TILED MAY 10, 1912.

Patented May 13, 1913.

4 SHEETS-SHEET 3.

H. A. REVERSIBLE TURMNL APPLICATION FILED MAY 10, 1912.

1,061,858. PatentedMay13,1913,

' 4 BHEBTFSHBET 4.

l accordance with my invention. Fig. 2 is a HENRY A. MOCULLOGH, 01 NEWYORK, N.

REVERSIBLE TURBINE.

Specification of Letters Patent. Application filed Hay 10, 1912. SerialNo. 696,437.

Patented May 13,;913.

Toall whom it mag concern:

Be it known that I, HENRY A. MoCUL- LOCH, a citizen of the UnitedStates, residing at New York, in the county of New York and State of NewYork, have invented new and useful Improvements in Reversi-' bleTurbine-Engines, of which the following is a specification.

This invention relatesto certain new and useful improvements inreversible turbines; and has for its object to provide an engine v ofthe improved type whereby the motive fluid shall be economicallyutilized.

A further object of the invention is to provide a turbine in which thepockets of the rotor are so arranged around its pethrottle valve havinga plurality of 'ent openings which may be automatically riphery' thatthey may receive the fullest impact and pressure of the motive fluid.

A still furtherobject of the inventionis to provide a turbine of this.type with a differoperatedfor regulating the speed of the turbin'e.

To these ends the invention consists in the novel details ofconstruction and combination. of parts more fully hereinafter describedand particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of thisspecification in which like numerals designate like parts in all theviews :-Figure 1 is a 'side elevational view of a reversible steamturbine constructed in transverse sectional view of the same. Fig. 3 isa cross sectional view taken on the line 33 of Fig. 2 and looking in thedirection of the arrow. Fig.4 is a detail plan view of the throttlevalve. Fig. 5 is a detail" plan view of the reversing valve. Fig. 6 isan en} larged detail cross sectional view of one of the bowl shapedpockets and Fig. 7 is a detail perspectlve view of the removable nozzleplate.

The frame of the turbine comprises the bed plate 1 which has. formedthereon the cylinder-casing 2 to the top of which is connected by thebolts 3, .the valve casing 4 which valve casing is provided in its upperportion with the usual steam inlet 4'. The cylinder heads 5 and 6, eachof which are provided with the bearings 7 and 8 and exhaust outlets 9,and 10, are bolted-to the cylinder-casing 2 and are adapted to'supportwithin the bearings 7 and 8 the main .rection of the travel the valvecasing,

spring pressed shaft 11, which shaft has mounted thereon 1 the beltwheel 12 over which passes a belt vl3 to a governor pulley 14, thelatter actuating an ordinary form of centrifugal governor 15 thatcontrols, through the connecting rod 16 and arm, 17, the throttle orgovernor valve 18.- The throttle valve is held within the opening 19 inthe upper portion of the valve casing 4 and is provided with a steaminlet 20, a central hollow portion 21 and a series of steam outlets 22,which outlets are gradually'increased in length, thepurpose of whichwill behereinafter described. A head 23 closesone end of the throttlevalve and also retains it within the opening .19 as shown inFig. 3. y 1i V Keyed to the main shaft 11 within the cylinder-casing 2 is the rotor24 which consists of a hub, portion 25 and radial arms 26 to whichareheld the cylinder 27 which cylinder is provided with a series ofopenings 28 into which are screwed the bowl shaped steam pockets .29. Toprevent considerable wear as is usual inengines of this type, a smallspace is provided between the periphcry. of the rotor and the casing. Aremovable nozzle plate 30 is seated within the cut away portion 31 ofthe valve casingand comprises the sloping top walls 32 and circularbottom wall 33. This nozzle plate is of the width of with two series ofnozzles 34 and 35 which nozzles are arranged approximately tangentiallyso that the steam shall strike the bowl shaped pockets of the rotor, asit rotates, practically at right power of the impact may bethusobtained. Located within the valve casing 4 are two series ofapproximately tangentially arranged steam passages 36'and 37whichcommunicate with the nozzles 34 and'35 for delivering the steamthereto.

In order to govern the direction of the flow of the steam, andconsequently the di-' of the rotor, a reversing valve 38 isplaced'within the seat 39 of ernor valve 18 and nozzle-plate 30. Thereversing valve 'is provided with a' series of slots'40 whichcommunicate with the pas sages 36 or. 37' for directing the steam toeither side of the nozzle plate. The valve is also provided with anoperating lever 41 which may be held in any one of three positions,forward, stop or reverse by the at a point between the gov-' pawl 42engaging the the rotor and is provided 7 angles, and the whole notchedsegment A series of steam passages 44 are located within the valvecasing between the throttle valve 18 and reversing sages 44, slots 40and passages 37 to the nozzles 35 which direct it against the bowlshaped pockets of the rotor, which, on account of lying approximately atright angles thereto receives the full impact of the steam and drivesthe rotor at a high rate of speed. The steam after having performed itswork, passes into the interior of the rotor and on out through theexhaust ports located within each heads. Should the turbine reach anexcessive speed, it will be automatically throttled bythe action of thecentrifugal governor, which, through the connecting rod, 16

and arm 17 cause the throttle valve 18 to'beturned so that the shorterports therein are successively brought from alinement with thecommunicating passages 44. This effects a gradual reduction of thesupply of steam to the nozzles until such time as the speed of theturbine becomes normal, after which the'throttle valve will erated sothat steam may'again be supplied uniformly to all of the nozzles.

It is obvious that those skilled in the art may vary the details ofconstruction andarrangements of parts without departing from the spiritof my invention and therefore I do not wish to be limited to suchfeatures except as may be required by the claims. 7

What I claim as new is,

1. In a turbine, the combination with a casing provided with a pluralityof steam passages, of a nozzle plate mounted within the casing, providedwith steam outlets in drical rotor within the casing provided with aplurality of pockets passing through its wall, the interiorof the rotorforming an exhaust chamber. s,

2. In a turbine, the combination with a casing provided with a pluralityof steam passages, of a nozzle plate mounted within the casing providedwith steam outlets in alinement with the steam passages, of a cy--lindrical rotor within the. casing provided with a plurality of pocketspassing through its wall, the interior of the rotor forming an exhaustchamber, and a means for controlling the passage of steamto the pocketssuccessively.

3. In a turbine, the combination with a casing provided with a pluralityof longitudinally disposed steam passages, of a noz-' of the cylinderagain be op-- ahnement with the passages and a cylinzle plate mountedwithin the casing provided with steam outlets in alinement with thesteam passages, of a cylindrical rotor provided with a plurality oflongitudinally disposed'pockets passing through its wall and a meansmounted within the casing adapted to control the passage of steam to thepockets successively.

4. In a turbine, the combination with a cylinder provided with aplurality of longitudinally disposed steam passages, of a reversingvalve provided with slots in aline- I ment with said steam passages, ofheads provided with exhaust outlets mounted on said cylinder, and acylindrical rotor provided with a plurality of pockets passing throughits wall, the interior of the rotor forming an exhaust chamber.

'5. In a turbine, the combination with a cylinder rovided with aplurality of longitudinal y disposed steam passages, means arranged tocontrol the passage of steam to the steam passages, of a reversing valveprovided with steam passages, of heads provided with the exhaust outletsmounted on said cylinder and a cylindrical rotor provided with aplurality of pockets passing through its wall, the interior of the rotorforming an exhaust chamber.

6. In a turbine, the combination with a casing rovided with a cut-awayportion and a p urality of angularly disposed steam passages, a nozzleplate mounted within the cut-away portion and provided with a pluralityof angularly disposed outlets in ahnement with the steam passages, acylindrical rotor within the caslng provided with a 'plurality'ofpockets, and a means for controlling the passage of steam to the pocketssuccesslvely.

7. In a turbine, the combination of a casing provided with a pluralityof steam passages, a rotor provided with a plurality of openmgs passingthrough its wall and removable steam pockets mounted within theopenings. 7

8;. In a turbine, the combination of a casing provided with a pluralityof horizontally arrangedand angularly disposed steam passages, a. rotorprovided with a. plurality of horizontally arranged openings assingthrough its wall, and removable owl-shaped steam pockets mounted withinthe o enings.

9. Ina tur ine, the combination of a casin provided-with a plurality ofhorizontal arranged and angularly disposed steam passages, a removablenozzle plate mounted within the casing provided with a plurality ofhorizontally arranged and angularly disposed steam outlets in alinementwith the steam passtges, and a rotor provided with a plurality ofbowl-shaped pockets and a means for controllin the 1o, In a turbine,the-' ombination of aces-f ing rovided with acut 'away portiongfa jranged series'of imp havlng fluid admitt ng portways leading 'to therespective impact surfaces, and means ,for controlling the admission ofa working v --fluid,. to the portways in successive'or col- :2 ranged inparallel series and-disposed par "portion. and provided oppositelydisposed nozzles arranged aps j proximately tan w vided with'a no eplate mounted withinthe' cut-away with two series of entially and arotor passing threu its well, saidv pockets ada'pted'to receive theimpact of the steam when at right angles to'the nozzles. 11'. Ina'turbine, a casin a rotor mounted in the casing and provide withparallel aract surfaces, the casing lective order. 12. In a turb 1 ne, acasing, a rotor'therein, said rotor having passageways therein arwiththe aids of the series vo passages,

1'0- gxurality of steam poc ate.

1 the valve and or rotor, the casing having ,rtways leadin to therespective .a-va ve adjustabl supported ,by the casing and provld indifierent fluid a itting positions and means for eontrollin the valve tolu'ing the portways therein 1n successive registration with the ortwayson one osi t1on of causing the co ect ve registration of the portways ofthe. valve w1th the said first portways on another position of thevalve. Y

Gm; A. Bmn.

25 adapted 'tocontrol the admission offlui to the first (ggrtways andarranged

